The toughest question was a logic problem. It went like this: An eccentric billionaire has 10 paintings. Each painting has a dollar value attached to it, and no two paintings have the same value. This man offers you the chance to play a game where you guess the highest value painting. If you do so correctly you win 10 million dollars. There is no second place, you must guess either the highest valued painting or lose. The game goes like this: You select one painting. The man reveals its value. You choose to continue the game or stop at that painting. If you stop, you win if the painting is the highest valued painting. You lose if it's not. If you continue, you draw another painting and again see the new value. You must again make the choice to stop on that one or continue the game. This keeps going until you choose to stop.
